※There is no problem with operation, but since it is cheap, it will be handed over as is. No remote control. It is the successor to the A-R630 and is a simple and highly versatile stereo premain amplifier equipped with plenty of input terminals. There are dullness and small scratches in places (Kojima Yosuke)
Maintenance information: 2023.12.30 Operation confirmed
Accessories: none
Main specifications: 60W-60W (8Ω) 7 audio inputs (AUX1, AUX2, TAPE1/CD-R, TAPE2, TUNER, PHONO, CD) equipped with phono equalizer amplifier (MM type) W435 x H142 x D355 mm 8.1 kg
*Since there are times when contact with the selector is poor, it is sold at a low price as is. Using the acclaimed 6BQ5 (5-pole tube), triode sound is achieved with luxurious UL connection operation. Equipped with 2 headphone terminals, it is an amplifier that can be used sufficiently as a headphone amplifier. The terminals and knobs are dull (Sasaki Shota)
Maintenance information: 2024.1.20 Operation confirmed
Accessories: power cable
Main specifications: Tubular headphone jack built-in premain amplifier, 3W+3W, 30-3kHz, W160 x H150 x D350 mm, weight 8.5 kg
Maintained! A pre-main amplifier equipped with a D/A converter based on the TA-F555ESR. You can fully enjoy the sound of Sony from the 80s, and it features a clear sound with few habits. There is a scratch on the volume, the top plate is rubbed, and there is a line wound (Oikawa Tetsuji)
Maintenance information: 2024.1.14 Maintained (the main volume VR is replaced with a custom-made product because it has a resound, replaced due to poor contact with the speaker relay,
B-class amplifier resistance deterioration 100Ω 470Ω replacement, INPUT selector DIGITAL/ANALOG switch 2 disassembly contact polishing cleaning grease application, cartridge LOAD switch disassembly contact polishing cleaning grease application, source direct MUTING SUBSONIC push SW3 contact cleaning, other DIGTAL substrates A class B class board with solder cracks, DC bias DC balance adjustment, other analog (Check the digital input/output connection sound output)
Accessories: copy of instruction manual
Main specifications: 105W+105W (8Ω) Sampling frequency: 38kHz,44.1kHz,48kHz automatic switching digital input/output terminal/3 optical input systems, 1 coaxial input system, 1 optical output system, 1 coaxial output system W470 × H166 × D435 mm 22.6 kg
The disposal price has been reduced! (Member discounts are not applicable) 2024/1/16 sales price 138,000 yen 21st century limited edition of the pure A grade premain amplifier “A-1,” which was sold in the 1980s. The unique form and warm tone unique to A-1 reproduce string and vocal music in a glossy and mild manner. This is an amplifier I want to combine with medium and small speakers with good sound. The exterior has a feeling of use such as dullness. Serial WAG0474 (Tomonori Asae)
Maintenance information: 2024.1.16 Sound output operation confirmed
Accessories: remote control power cable
Main specifications: pure A grade 36W x 2 (8Ω) damping factor 142 phono input sensitivity 3.3 mV (MM) input impedance 47 kΩ S/N ratio 81 dB overload margin 29 dB line input 4 systems/PHONO input 1 system (MM) size W440 x H77 x D385 mm weight 7.15 kg
The price has been drastically reduced. 2024/1/14 sales price 268,000 yen Maintained! LUXMAN 70th anniversary signature model. The standard EL34 push-pull configuration has an OY transformer, and is designed so that you can fully enjoy the flavor of luxe stone. Using an unprecedented high-rigidity chassis, it also has an outstanding sense of luxury. This is a 90s vacuum tube premain with a good balance of range, thickness, and tone. There is a feeling of use such as discoloration of the SP terminal. Serial W71111541B (Takasaki Atsushi)
Maintenance information: 2024.1.14 Maintained (replace solder, fix contacts due to push SW contact corrosion, wipe, vacuum tube pin, clean, cable clamp, loose fix. (Bias check, each input/output, audio check output: approx. 30W when output is 8 ohms; interior and exterior cleaning.)
Accessories: copy of manual, power cord
Main specifications: output 30W+30W (6Ω) phono (mm) 2.5mV/47kΩ vacuum tube EL34 (6CA7) x 4, 12AU7 x 4, 12BH7A x 2 W430 x H209 x D387 mm 22 kg
The disposal price has been reduced! (Member discounts are not applicable) 2024/1/11 sales price 5,000 yen ※The sound output has been confirmed, but it is cheap because the condition is poor. An AV amplifier equipped with AV surround functions such as Dolby Pro Logic and DSP in a full-scale high quality amplifier. By adding initial reflection sounds and reverberation sounds with DSP to the signal output from the direction enhancement circuit, a powerful sense of realism has been obtained. The exterior has a feeling of use over time, such as dullness and stains. Serial 40300061 (Tomoho Asaine)
Maintenance information: 2024.1.11 sound output confirmed ※Video unchecked
Accessories: none
Main specifications: rated output 60 W+60 W in stereo power supply voltage AC100V, 50 Hz/60 Hz power consumption 220 W maximum external dimensions 440x162x432mm weight 13.4 kg
※There is no problem with operation, but since it is cheap, it will be handed over as is. An entry model with excellent cost performance. Since it comes with a phono circuit, you can also enjoy records. The sound quality is stable in both digital and analog. There are no noticeable scratches on the exterior. Serial 5101207110 (Fujisawa Yukishi)
Maintenance information: 2024.1.17 Operation confirmed
Accessories: remote control, copy of instruction manual, connection cord
Main specifications: 50W+50W (8Ω) line input 4 systems phono 1 system (MM) with pre-out terminal W434 x H121 x D308 mm 7.1 kg
The price has been drastically reduced. 2024/1/13 sales price 228,000 yen This amplifier was planned to commemorate the 35th anniversary of Aura Design, and will be the first to arrive at Hi-Fi. This anniversary model, which bears the VA40 of the first model, is a model that faithfully reproduces the circuit design at that time. The MOSFET single push-pull reproduces fresh sound. This model will be a domestically manufactured model. The exterior is beautiful with no conspicuous scratches. Serial ARI0018 (Tamura Eiji)
Maintenance information: 2024.1.14 Operation confirmed
Accessories: instruction manual, power cable, original box
Main specifications: 50W+50W (8Ω) W430 x H76 x D350 mm weight 7.2 kg
Full maintenance was carried out, from the capacitor to the exterior! 38 FD, the most popular of the 38 series, is now in stock! The warm tone has plenty of warmth in the bass and mids, and you can enjoy the true essence of lackstone, where you can enjoy the afterglow of the tone. The appearance, dullness, and slight repair marks are good (Kobayashi Hitoshi)
Maintenance information: 2023.11.18 maintenance (phono circuit electrolytic capacitor replacement, operation check.) 2023.10.4 Maintenance (Phono part, EQ circuit controller, oil capacitor, carbon resistor replacement. running test.) 2023.7.27 maintenance (oil capacitor, block capacitor, electrolytic capacitor, film capacitor, semi-fixed resistor, fixed resistor, master VR, rear panel VR, bass/trebleVR, rectifier diode, SP terminal, DIN terminal, power supply SW/monitor SW replacement. RCA terminal polishing. Balance VR, lever SW disassembly cleaning, and application of grease to prevent oxidation and sulfidation. Replace 2 output tubes. Cabinet exterior repair, polishing, and oil finish. Input/output waveform check, residual noise check, load test (1 kHz sine wave, 26W+26W at 8 ohm load), sound output test.)
Accessories: power cord, instruction manual (copy)
Main specifications: 30W+30W (4, 8, 16 ohms) line input 4 systems phono 2 systems (mm) W476 x H190 x D335 mm 18 kg
The price has been drastically reduced. 2024/1/13 Sales price 138,000 yen Maintained by the manufacturer! Long-established Luxman compact vacuum tube type premain. The neat design and simple operability make you feel like it's a new era, but it has a sturdy finish that is warm and new, such as adopting a traditional OY type transformer. The sharp vacuum tube sound is attractive. The exterior is good with a dullness (Kobayashi Hitoshi)
Maintenance information: 2024.1.13 manufacturer maintenance completed (input selector switch replacement, inspection of each part, bias adjustment)
Accessories: remote control, instruction manual, power cord, original box
Main specifications: rated output 12W+12W (6Ω), 10W+10W (8Ω/4Ω) vacuum tube ECC83 x 1, ECC82 x 2, EL84 x 4, 3 input lines, Phono (MM compatible) 1 system frequency characteristics 20 Hz to 50 kHz W297 x H162 x D258 mm 11.5 kg
A full restoration with a total of 86 capacitors and all other deteriorated parts reviewed! Limited edition D907. It is symmetrical and thick compared to modern aircraft, has an excellent sense of energy, has more momentum than resolution, and is full of appeal unique to this era. The ebony wood case gives off a sense of luxury. There is a scratch on the front panel corner on the exterior (Oikawa Tetsuji)
Maintenance information: 2024.1.14 Operation confirmed
2023.12.29 Maintained (capacitor, semi-fixed resistor, transistor, relay, RCA terminal replacement. Each SW/VR type cleaning, removing old solder from each board, then re-soldering and flux removal. Idle and offset adjustment. Interior/exterior cleaning. Heat dissipation sheet replacement. Various measurements, audio output tests. Input/output waveform confirmation, load test (1kHz sine wave, 8Ω load: 100W+100W, OK), sound output test)
Accessories: copy of instruction manual
Main specifications: output 100W+100W (8Ω) PHONO (MM/MC) compatible load impedance 4 to 16 ohms dimensions W466 x H182 x D432 mm weight 19.8 kg
The deteriorated capacitors, transistors, speaker terminals, etc. have been fully restored! Sansui's famous machine! A pre-main amplifier with improved audio characteristics and operability by adopting a unique chassis structure. Please enjoy the rich sound of Old Sansui. A different world from digital high-end will unfold. The exterior has dullness and small scratches, but it is a beautiful individual compared to its age. Serial 236060344 (Fujisawa Yukishi)
Maintenance information: 2024.1.12 Maintained (relay, heat dissipation sheet, electrolytic capacitor, transistor, semi-fixed resistor, SP terminal, fuse replacement. RCA terminal plating work, VR, SW cleaning. Substrate cleaning and re-soldering. Input/output waveform confirmation, load test (1 kHz sine wave, 8 ohm load: 80W+80W, OK), sound output test. *There is a gang error when the main volume starts up, but it cannot be corrected with a detent volume. Please be aware.)
Accessories: copy of instruction manual
Main specifications: output 80W+80W frequency characteristics 10Hz to 50kHz W460 × H160 × D375 mm 17.9 kg
Maintained! A mid-range model in the D series that has a reputation for its powerful sound. The mid to high range is perfectly twisted into a powerful low range. It goes perfectly with sharp speakers such as JBL and DIATONE. This is one that shines with its high cost performance even though it is in a price range that is easy on the wallet. The exterior has a feeling of use such as dullness and abrasions. Serial 210110534 (Tomonori Asaine)
Maintenance information: 2024.1.12 maintained (tone circuit capacitor replacement, protector circuit capacitor replacement, semi-fixed VR, differential circuit section UPA68H replacement, running test ※ it takes about 10 to 15 seconds for the relay to enter) 2023.10.13 maintenance (power transistor, resistor, capacitor, fuse replacement, adjustment inspection, output test with dummy load, running test) 2023.7.7 Maintained (master volume, balance VR replacement, output relay, headphone relay replacement, May amp circuit transistor, Mylar capacitor, semi-fixed VR replacement, equalizer circuit part op amp replacement, input selector, reck-out switch disassembly, polishing grease application, solder deterioration repair, each volume, switch cleaning, interior and exterior inspection, adjustment inspection)
Accessories: copy of instruction manual
Main specifications: Super feedforward & DD/DC amplifier, Phonomm/MC compatible, SNR 110 dB or more, damping factor 100 95W+95W (8Ω), rated power consumption 250W, W445 x H163 x D403 mm, 14 kg
Maintained in 2023/6! A pre-main amplifier developed by incorporating Yamaha's unique technology to achieve stable driving capability at all times. It achieves clear sound that can be directly reached to the ears. It also has driving power, and it transmits power well. You can see noticeable scuffs and dullness on the exterior and top plate (Daiki Goto)
Maintenance information: 2023.6.7 maintenance completed (selector and other switch disassembly contact polishing, contact cleaner application, main amplifier circuit solder correction, various parts dismantled and cleaned.)
Accessories: none
Main specifications: power consumption 260 W rated 185 W+185 W (6 ohms) W473 x H171 x D448 mm 20 kg
The price has been drastically reduced! 2024/1/10 sales price 198,000 yen Marantz's highest peak premain amplifier in the early 1990s! This is a Marantz soul amplifier that uses an oversized power transformer and capacitor. It is precise, has high resolution, and has an excellent ability to easily drive a speaker. The exterior has scuffs and some bumps. Serial MZ009621130013 (Fujisawa Yukishi)
Maintenance information: 2024.1.10 Operation confirmed
Accessories: No accessories
Main specifications: 150W+150W (8Ω) line input 6 systems phono 1 system (MM/MC switching) tape system 2 systems W454 x H210 x D467 mm 32 kg
Triode line exclusive vacuum tube premain developed with the novel concept of an amplifier for women. With its compact, exquisite size and high design, it can be used in a variety of situations. The exterior is in good condition with no conspicuous scratches (Tomonori Asae)
Main specifications: output 3W+3W (8Ω) vacuum tubes 6BQ5 x 2, 12ax7 x 2, dimensions W190 x D180 x H135 mm weight 4.7 kg
The price has been drastically reduced. 2024/1/6 sales price 128,000 yen Manufacturer maintained! The second generation of the popular S10 series. Since it is equipped with a powerful power supply unit, the sense of energy in the low range is excellent, and it shows driving power that exceeds the price. The line with each tone is thicker than current Denon amplifiers, and the sound is full of volume, which is attractive. There is a slight feeling of use. Serial 9047301103 (Kanai Hidetsugu)
Maintenance information: 2024.1.5 manufacturer maintenance (MM/MC changeover switch replacement, SD switch/input select switch disassembly contact polishing, lubricant application. (Idling adjustment, operation inspection)
Accessories: instruction manual, power cable
Main specifications: rated output 100W+100W (8Ω) PHONO (MM/MC compatible) dimensions W434 x H181 x D485 mm weight 28 kg
The price has been reduced! 2024/1/9 sales price 148,000 yen Minor change model of Krell's first integrated amplifier K-300i. A large 400VA toroidal transformer is built into the power supply unit. The preamp section has a fully discrete and fully complementary configuration for all stages. The thick, roomy sound unique to KRELL is still appealing enough. There is a slight feeling of use and small scratches on the exterior. Serial 8799086097 (Fujisawa Yukishi)
Maintenance information: 2024.1.9 operation confirmed
Accessories: remote control, instruction manual, power cord
Main specifications: 150W ✕ 2 (8Ω) W483 ✕ H94 ✕ D394mm 11.4 kg
The price has been reduced! 2024/1/8 sales price 798,000 yen Beautiful item with original box! First arrival at Hi-Fi Hall. This current premain amplifier is the ultimate in Technics' digital technology. Equipped with a DAC, it is also possible to directly connect digital devices. What is noteworthy is record playback that makes full use of digital technology, and it is equipped with the Intelligent PHONO EQ, which is an innovative phono equalizer that can reproduce the original sound quality of the cartridge by correcting the cartridge's crosstalk and peak with DSP. The innovative and powerful power supply unit realizes majestic, energetic playback sound with high resolution and excellent driving ability for speakers. The exterior is beautiful with no conspicuous scratches. Serial GJ2CA001005 (Takahashi Nobuyuki)
Maintenance information: 2024.1.8 operation confirmed
Accessories: original box, instruction manual, power cable, calibration record, custom velvet cover
Main specifications: rated output 150 W+150 W recommended load impedance 4 ohm to 16 ohm frequency characteristics PHONO (MM) 20 Hz to 20 kHz line 5 Hz to 80 kHz digital 5 Hz to 80 kHz power supply AC 100V 50/60 Hz W430 × H191 × D459 mm weight 22.8 kg
The price has been reduced. 2023/12/20 sales price 45,000 yen manufacturer maintenance completed! Digital pre-main amplifier compatible with DSD 5.6 MHz. CSR DDFA technology is used in the amplifier section, and analog waveform reproduction technology “Advancedal32Processing” is equipped with unique bit expansion and data complementation. The large number of accesses compatible with various sources such as network radio, Wi-Fi, AirPlay, and Bluetooth is also attractive. There is an appearance, dullness, and a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2023.12.19 manufacturer maintenance completed (antenna, others, terminal replacement, operation inspection OK)
Accessories: remote control, instruction manual, power cord, original box, antenna
Main specifications: 35W+35W (8Ω) 70W+70W (4Ω) compatible impedance 4Ω/8Ω analog input systems, digital input COAXIAL, OPTICAL, USB (Atype) compatible format MP3 (32 to 48 kHz), ALAC (32 to 96 kHz), WMA, WAV, MPEG-4 AACD, FLAC, AIFF (32 to 192 kHz) DSD (2.8 · 5.6 MHz/1 bit) W280 ×H160×D337mm 4.8kg
A full restoration with a total of 86 capacitors and all other deteriorated parts reviewed! Top model in the 07 series. Sound particles react finely and delicately. The high frequency extension has a pleasant and beautiful afterglow. Also, it is a rich, analog, and tasteful sound unique to vintage. The ebony wood case gives off a sense of luxury. There is a noticeable scratch on the top plate on the exterior (Sasaki Shota)
Maintenance information: 2023.12.29 Maintained (capacitor, semi-fixed resistor, transistor, relay, RCA terminal replacement. Each SW/VR type cleaning, removing old solder from each board, then re-soldering and flux removal. Idle and offset adjustment. Interior and exterior cleaning. Heat dissipation sheet replacement. Various measurements, audio output tests. Input/output waveform confirmation, load test (1kHz sine wave, 8Ω load: 100W+100W, OK), sound output test)
Accessories: copy of the manual
Main specifications: output 100W+100W (8Ω) PHONO (MM/MC) compatible load impedance 4 to 16 ohms dimensions W466 x H182 x D432 mm weight 19.8 kg
The disposal price has been reduced! (Member discounts are not applicable) 2023/12/30 sales price 9,800 yen ※It is cheap because it is in poor condition due to tobacco smell, yellowing, etc. *Currently sold, the remote control is out of stock. Denon's long-selling 390 series 4th generation premain amplifier. Recommended for desktops and those with limited size. A classic model that is small yet thick in the mid-range, and has a steady sound. The exterior has a feeling of use over time, such as yellowing and dullness caused by tar. Serial 1014550132 (Tomonori Asaine)
Maintenance information: 2023.12.31 operation confirmed
Accessories: copy of the instruction manual ※ remote control is not included
Main specifications: 50W+50W (8Ω) PHONO (MM) W434 × H121 × D338 mm 7.0 kg
The price has been reduced. 2024/1/3 sales price 46,800 yen Class D power amplifier compatible with DSD 11.2 MHz and PCM384 kHz/32 bit inputs. When reproducing a digital source, all processing from input to output can be performed in the digital domain. It is also equipped with a USB-DAC function and Bluetooth function, so you can enjoy music with high sound quality from a PC to a smartphone. There is a slight feeling of use, such as dullness. Serial AXD36171000056 (Takasaki Atsushi)
Maintenance information: 2024.1.3 operation confirmed
Accessories: remote control, manual, power cord, connection cord, original box
Main specifications: rated output 20W+20W (8Ω) 40W+40W (4Ω) speaker load 4-16Ω analog audio input terminal/unbalanced input × 1 digital audio input terminal/USB-B input × 1 coaxial digital input × 1 optical digital input × 2 W200 × H86 × D258 mm 2.7 kg
Maintained by the manufacturer! Rotel pre-main amplifier. The successor to the company's RA-1062. A full-scale design that uses WBT terminals and other parts that cost more than the price. The unobtrusive and refreshing sound quality is compatible with a wide variety of genres. The exterior has footprints, line marks, and dullness on the top plate (Mizusaki Ryo)
Maintenance information: 2024.1.6 Maintained (balance volume contact improvements implemented. Replacement was carried out due to unstable speaker AB co-output and deterioration of speaker relay contacts. Other confirmation)
Accessories: remote control, instruction manual, power cord
Main specifications: 75W+75W with MM input W431 x H99 x D358 mm 8.7 kg
Tubular hybrid premain amplifier with a stylish Italian design. The sound is supported by a powerful power supply unit using a large toroidal transformer, and I feel that it is on a scale that exceeds its class. It combines fineness, transparency, and stability, and makes small European speakers sound glossy. There are scratches on the exterior. Serial A05E0044R12M (Miura Kimiya)
Maintenance information: 2023.12.30 Operation confirmed
Accessories: remote control
Main specifications: 100W+100W (8Ω) input/4 RCA unbalanced inputs/1 RCA unbalanced input system (phono) output/speaker output/tape output 1 system W210 x H75 x D380 mm weight 7.5 kg
※The remote control is out of stock, and the attenuator is slightly chipped, so it is cheap, and it is delivered as is. Uses blue capacitors developed in the Integra series. Although it is compact, it feels pretty good, and the mid-range makes a good impression. In addition to the exterior and stickiness of the rubber on the back of the foot, there is a feeling of use such as dullness, abrasions, etc. (Kobayashi Hitoshi)
Maintenance information: 2024.1.4 operation confirmed (there is a slight gap left in VOL)
Accessories: none
Main specifications: rated output 60W+60W (4Ω), 50W+50W (8Ω) Phono (mm) W275 x H118 x D335 mm 7.5 kg
*Since the LCD is dark and dot unevenness is conspicuous, it is currently sold at a low price. This is a pre-main amplifier with a built-in FM/AM tuner. It's dictionary-sized and lightweight, but it produces high frequencies that pass through and low frequencies that are sharp. The tuner's reception sensitivity is good, and the loud DJ's voice resonates well (Sasaki Shota)
Maintenance information: 2024.1.4 operation confirmed
Accessories: power cable
Main specifications: output 25W+25W (6Ω) dimensions W200 x H70 x D260 mm weight 3.1 kg
Maintained. The successor that inherited the sound of the D series. A model where you can feel the uniqueness of Sansui at the time due to the extrusion of low frequencies and the creation of sound. They are energetic, playable, and go great with jazz and rock, and the phono is compatible not only with MM but also with MC, making it great for analog fans. There is veneer peeling on the side panel on the exterior (Sasaki Shota)
Maintenance information: 2023.12.28 maintained (balance volume replacement, output relay replacement, power cord replacement, main amplifier circuit transistor replacement, equalizer part op amp replacement, power supply unit floating resistor replacement, input selector, reck-out, tone, subsonic, muting switch disassembly, polishing grease application, each volume, switch cleaning, interior and exterior inspection cleaning, operation confirmation.)
Accessories: none
Main specifications: execution output 80W+80W (8Ω) damping factor 100 rated power consumption 200W phono MM/MC compatible W460 x H160 x D404 mm weight 13.2 kg
*Operation has been confirmed, but since it is inexpensive, it is currently sold. It is a simple amplifier circuit unique to digital amplifiers, and features a smooth tone that is straight and has no peculiarities. Also, the driving feeling is more attractive than it looks, and it drives the small SP powerfully. There is a feeling of use such as scuffs. Serial 2648JJB250023269 (Takasaki Atsushi)
Maintenance information: 2024.1.3 operation confirmed
Accessories: remote control, manual, RCA cable, power cord
Main specifications: 40W+40W (8Ω) damping factor 60 audio input terminals digital x 2 (optical x 1, coaxial x 1) analog x 5 audio output terminals analog x 1 W435 x H80 x D340 mm 10.2 kg
※It is inexpensive because it smells like tobacco and the veneer sheets can expand and contract. Remote control is missing. Lux mid-level class premain. It has a wide range equipped with a low frequency and warm color VU meter that is more powerful than the output, and the softness typical of a lux is comfortable. The exterior has a few spots such as dullness and small scratches. Serial W70310683C (Miura Kimiya)
Maintenance information: 2024.1.3 operation confirmed
Accessories: copy of instruction manual, power cable (general purpose)
Main specifications: 100W+100W (8Ω) W467 x H179 x D440 mm 20 kg
The coupling condenser was replaced with an oil paper condenser in 2017 (Del Ritmo Vitamin-Q), and various other areas have been refreshed and maintained! Luxe kit origin A3300 and A3500 set. The balance between the soft, thick bass typical of a vacuum tube and the smooth treble sound is good, so you can relax and enjoy the music. There are small scratches and dullness on the exterior, but it is a beautiful category even when viewed from the model year (Takasaki Atsushi)
Maintenance information: 2023.10.13 maintenance (2 output vacuum tubes (6CA7), grid resistors, fuse replacement. Waveform check (residual noise, distortion), sound output test)
2017.6.16 Maintained (A3500/output transformer rewound. SP terminal, RCA terminal replacement, input VR x 2, coupling capacitor replacement. A3300/9P socket, RCA terminal, volume BAL VR x 2, coupling capacitor replacement SW and VR decomposition, repolish, and apply grease to prevent oxidation and sulfidation. Solder bad solder redone, bias value, and DC offset readjusted. Exterior cleaning, input/output waveform check, load test)
Accessories: connection cord
Main specifications: (A3300) 12AX7 × 4 12AU7 × 2 phono input 2 systems line input 4 systems pre-out 2 systems tape output 2 systems W400 × H130 × D245 mm 3.5 kg (A3500) 6CA7 × 4 6AQ8 40W+40W W465 × H168 × D206 mm 16 kg
The price has been drastically reduced. 2023/12/29 sales price 128,000 yen Premain amplifier from Demizu Electric. It has a neutral, speedy sound. It combines a moderate sense of temperature and sound field reproduction. The ease of manufacture unique to domestic production is also attractive. There is a 2nd Generation notation. The exterior is dull. Serial 0049 (Murakoshi Yoichi)
Maintenance information: 2023.12.29 sound output confirmed
Accessories: instruction manual, power cord
Main specifications: 80W+80W input LINE3 system, with REC OUT W460 x H100 x D430 (mm) weight 9 kg
The price has been reduced. 2023/12/29 selling price 128,000 yen DENON's best-selling model. In addition to the thickness of the mid and low frequencies, the sound that smoothly extends the range to the high frequencies is attractive. It is an amplifier that incorporates the features of high-end machines, such as phono MM/MC switching and separate functions that enable pre-out power in. There is a line scratch on the top plate and a scratch on the volume knob (Sasaki Shota)
Maintenance information: 2023.12.29 Operation confirmed
Accessories: remote control, manual, power cable, original box
Main specifications: rated output 80W+80W (8Ω), 2 speaker output systems, AORB load, 4Ω to 16Ω, A+B load, 8Ω to 16Ω, W434 x H181.5 x D434.2 mm, weight 24.4 kg
*Currently sold. It is a “tuning model” where each vacuum tube pair is selected from 500 vacuum tubes and matched, then measured according to each individual amplifier, and recombined based on actual measured values! Single-ended vacuum tube premain amplifier with pure Class A operation. It achieves a drastic improvement in localization to the extent that you can tell the difference by listening to it, and instantly invites the listener to the sound source playback space. There is no spare vacuum tube. Serial S0749 (Takasaki Atsushi)
Maintenance information: 2023.12.31 operation confirmed
Accessories: AC adapter, original box, instruction manual
Main specifications: rated output 2.5 W x 2 ch compatible speakers 4 ohm to 8 ohm (2 systems) vacuum tube 6J1 x 2, 6P1 x 2 input terminal PHONO (MM), LINE W184 x H105 x D158 mm 1.7 kg
The price has been reduced. 2023/12/29 sales price 128,000 yen Maintained! Upgraded model of the famous A1 pre-main amplifier. In addition to the straightforward sound of pure A grade, the powerful driving power full of guts is attractive! There are stains on the exterior over time, but there are no noticeable scratches (Sasaki Shota)
Maintenance information: 2023.12.29 Maintained (bridge diode short circuit board capacitor defect, VOL failure → replacement, each SW, VOL cleaning operation check. No earth terminal screws, original not available, screw installation (Fuse break replacement)
Accessories: none
Main specifications: pure A grade 60W+60W with PHONO (MM/MC) W440 x H83 x D360 mm 13.0 kg
The disposal price has been reduced! (Member discounts are not applicable) 2023/12/9 sales price 298,000 yen Maintained during AccuPhase! It is the company's popular premain amplifier, manufactured by completely independent pre part and power part. The high resolution and sharp, sharp sound quality are appealing even today. The quality of the phono equalizer is also high, and it is also recommended for analog fans. The exterior is dull and scratched over time. Serial D1W701 (Hiroki Aso)
Maintenance information: 2023.12.9 maintained (since there are no original parts with poor main volume contact, replaced with replacement, push switch, balance volume, poor contact, inventory, cleaning, future operation guarantee, performance guarantee is not possible; since there is no original remote control, the replacement product can be attached, pressure resistance check is OK)
Accessories: Replacement remote control remote control (there are buttons that are in poor condition and don't work, but there are buttons that are not on the replacement remote control, so they are included) instruction manual
Main specifications: 170W+170W (8Ω) PHONO input compatible (MM/MC) dimensions W475 x H180 x D375 mm weight 25 kg
※There is no problem with the operation, but since it is cheap, it will be handed over as is. Onkyo's pre-main amplifier with a simple design. Although it is an inexpensive model, it has a clear, well-defined sound, and is recommended for those who want to enjoy music casually. The exterior is dull. Serial 3900 JJ5510640249 (Miura Kimiya)
Maintenance information: 2023.12.28 Operation confirmed
Accessories: remote control, instruction manual
Main specifications: 44W+44W (8Ω) PHONO (MM) W435 x H129.5 x D333 mm weight 6.4 kg
※The short pin is out of stock, so it's cheap. A compact and simple pre-main amplifier. Although it was a small housing, the extrusion was strong, and the wide range and clear, sharp sound were impressive. The sound is straightforward and has no habit. There are dark spots on the exterior (Tomonori Asaine)
Maintenance information: 2023.12.28 Operation confirmed
Accessories: none
Main specifications: W270 x H135 x D335 mm 7.5 kg
The price has been reduced. 2023/12/22 sales price 798,000 yen A pre-main amplifier compatible with high-resolution sound sources. Equipped with 6 digital audio inputs, including a USB audio processor, it is possible to convert asynchronous data between high-resolution DSD and PCM signals up to 192 kHz/32 bit resolution! A dedicated driver can be installed on a Windows computer, and high-resolution sound sources saved on the computer can also be enjoyed. In addition to the mid-low range, which has a traditional core, this is a versatile machine with an extremely high medium to high range with an extremely high SN-feel. Small scratches can be seen on the exterior (Hiura Katsuji)
Maintenance information: 2023.12.18 sound output confirmed
Accessories: remote control, instruction manual, power cable
Main specifications: output 200W+200W (8Ω) 350W+350W (4Ω/2 Ω) analog input XLR balance x 1 system RCA unbalance x 3 system input impedance 45 kΩ or more digital input XLR-AES/EBU x 1, RCA-S/PDIF x 2, OPT-EIAJ x 2, USB-B x 1 32 bit/192 kHz & DSD native playback compatible (USB input) sampling frequency 32, 44.1, 48, 88.2, 96, 176.4, 192 kHz W438 × H193 × D507 mm 32.6 kg
The price has been drastically reduced. 2023/12/22 sales price 680,000 yen This is the top model of a premain amplifier sent out by AccuPhase to commemorate its 40th anniversary. Uses AAVA volume. The power amplifier section with pure Class A operation is designed to be resistant to changes in the surrounding environment. An overwhelming amount of information filled with a sense of silence and scale. It's the ultimate premain with a high degree of perfection. Small scratches can be seen on the exterior (Hiura Katsuji)
Maintenance information: 2023.12.18 sound output confirmed
Accessories: remote control, instruction manual, power cable
Main specifications: 30W+30W (8Ω), 60W+60W (4Ω) frequency characteristics 20Hz to 20kHz input terminals/balance (XLR) x 2 systems, unbalance (RCA) x 5 systems. Up to 2 option boards can be added to the rear panel W465 x H191 x D428 mm 24.7 kg
Maintained! Onkyo's Primen amplifier. Aiming for a digital reference, we are measuring improvements in playback capability by thoroughly simplifying amplifier configurations and circuit configurations. This is one unit that naturally transmits digital information to speakers. There is dullness and scuff marks (Daiki Goto)
Maintenance information: 2023.12.27 Maintained (knob attached. Switches that can be disassembled are disassembled, the contacts are polished, and contact cleaner is applied. Soldering correction in the main amplifier and other circuits. (I/O pin jack polish.)
Accessories: copy of instruction manual
Main specifications: rated output 130W+130W (8Ω) damping factor 100 power consumption 230W size W471 x H173 x D396 mm weight 22.5 kg
This model is the first premain amplifier equipped with AAVA volume control. In addition to the delicate and warm characteristics of pure A class amplifiers, the sense of sound field is also expanded by equipped with excellent SN volume during actual use. It is a practical pre-main amplifier with an extremely high degree of perfection. The exterior is good, with a slight dullness (Kobayashi Hitoshi)
Maintenance information: 2023.12.26 Operation confirmed
Accessories: remote control, instruction manual, power cord
Main specifications: 30W+30W (8Ω), 60W+60W (4Ω) compatible impedance 8 to 16 ohms W465 x H196 x D427 mm 23.9 kg
*Currently sold. The remote control is out of stock. An entry model with excellent cost performance. Since it comes with a phono circuit, you can also enjoy records. The sound quality is stable in both digital and analog. There is an appearance, dullness, and a feeling of use (Kobayashi Hitoshi)
Maintenance information: 2023.12.25 Operation confirmed
Accessories: none
Main specifications: 50W+50W (8Ω) line input 4 phono 1 system (MM) with pre-out terminal W434 x H121 x D308 mm 7.1 kg
※6 month warranty. Comes with a remote control. DENON's pre main amplifier with excellent cost performance. It is also suitable for entry-level machines and second systems. There are threads and dullness on the exterior (Mizusaki Ryo)
Maintenance information: 2023.12.26 sound output confirmed
Accessories: remote control, instruction manual, power cord, original box
Main specifications: 70W+70W (8Ω) 140W+140W (4Ω) PHONO/MM/MC switching compatible W434 x H134 x D407 mm 14.6 kg
The price has been drastically reduced! 2023/12/23 sales price 158,000 yen*It is cheap because there are noticeable scratches on the knobs and upper front. Maintained by Luxman! This is a pure Class A premain amplifier that combines subtlety and strength. The sound unique to Lux Class A amplifiers, which is smooth, glossy, and has a sense of scale, is attractive. The low frequency playback also has a sense of volume, and it has a reputation for being compatible with European speakers such as TANNOY. As for the exterior, there are scratches and bumps on the front and cabinet. Serial A20715616A (Yonejima Satoshi)
Maintenance information: 2023.12.8 manufacturer maintenance completed (balance volume replacement. Replace the protector relay. Main part limiter circuit capacitor replacement. Solder deterioration part correction. Other parts are inspected and readjusted)
Accessories: copy of instruction manual
Main specifications: 50W+50W (8Ω), pure A class operation, equipped with a high-capacity toroidal transformer, phono equalizer, MM/MC compatible, W438 x H176 x D467, 30 kg
A special edition of the PM-80. A popular Marantz model from the 90s that has both luster and strength. This is a geeky model where you can enjoy the difference in tone by switching between A grade and AB grade. There is a feeling of use, dullness, and small scratches. Serial MZ009119060022 (Teramoto Hidehiko)
Maintenance information: 2023.12.24 Maintained (replacement of defective output relay contacts. Polish the selector switch and other disassembly contacts and apply contact cleaner. I/O pin jack polish Power supply circuit soldering correction)
Accessories: none
Main specifications: AB class 100W+100W (8Ω) A grade 20W+20W (8Ω) size W454 x H165 x D380 mm weight 17.5 kg